DB_MPOOLFILE->set_pgcookie()

The DB_MPOOLFILE->set_pgcookie() method specifies a byte string that
is provided to the functions registered to do input or output
processing of the file's pages as they are read from or written to,
the backing filesystem store. (See the
DB_ENV->memp_register()
documentation for more information.)

The DB_MPOOLFILE->set_pgcookie() method configures a file in the
cache, not only operations performed using the specified
DB_MPOOLFILE handle.

The DB_MPOOLFILE->set_pgcookie() method may not be called after the
DB_MPOOLFILE->open()
method is called. If the file is already open in the cache when
DB_MPOOLFILE->open() is
called, the information specified to DB_MPOOLFILE->set_pgcookie()
will replace the existing information.

The DB_MPOOLFILE->set_pgcookie()
method returns a non-zero error value on failure and 0 on success.

Parameters

pgcookie

The pgcookie parameter is a byte
string provided to the functions registered to do input or output
processing of the file's pages.